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A054564
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Prime number spiral (clockwise, Southeast spoke).
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8
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2, 11, 59, 157, 313, 547, 829, 1201, 1621, 2153, 2749, 3463, 4217, 5059, 6011, 7001, 8167, 9343, 10631, 12071, 13513, 15107, 16759, 18481, 20399, 22343, 24371, 26591, 28807, 31231, 33617, 36229, 38891, 41647, 44501, 47533, 50549, 53759, 56957
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OFFSET
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0,1
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COMMENTS
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8-spoke wheel overlays prime number spiral; hub is 2 in shell 0; 8 spokes radiate from this hub; this is Southeast, clockwise.
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LINKS
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FORMULA
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EXAMPLE
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Begin a prime number spiral at shell 0 (prime 2), proceed clockwise, Southeast.
The spiral with four terms in every spoke looks like this:
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227 101--103--107--109--113--127
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223 97 29---31---37---41 131
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211 89 23 3----5 43 137
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199 83 19 2 7 47 139
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197 79 17---13---11 53 149
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193 73---71---67---61---59 151
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191--181--179--173--167--163--157
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(End)
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MATHEMATICA
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Table[ Prime[4n^2 + 1], {n, 0, 40} ]
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CROSSREFS
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KEYWORD
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easy,nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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